Holder for bobbins in transfer mechanism



Aug. 8, 1944. T. J. I EvEsQUE l HOLDER FOR BOBBINS IN TRANSFER MECHANISM Filed Feb. 5, 1944 l W600/0f@ L e INVENTOR ATTORNEYS Patented Aug. 8, 1944 HOLDER FOR' BOBBINS IN TRANSFER MECHAN ISM Theodore J. Levesque, Fall River, Mass., assigner of one-third to Benjamin Horvitz and one-third to Barney Prebluda, both of Fall River, Mass.

Application February 5, 1944, Serial No.7521,199"

4.- Claims.

This invention relates to transfer of a bobbin from a rotary magazine or hopper and has to do more particularly with the holding of the bobbin just prior to such transfer.

It is known that in looms having a rotary hopper for holding a plurality of filling carriers or bobbins that vibration of the loom will turn or wind up the thread at a time just prior to the transfer that a break ofthe filling thread may occur. Attempts have been made to engage the bobbin midway of its length to prevent such rotation butY this point of engagement has disadvantages in that sometimes bobbins are utilized which are not fullV and consequently adjustment must vbe made for each individually' differently lled bobbin. Then again engagement at this point requires projecting parts and supports which necessitate involved mechanism. An attempt has' also been made to engage the rings on the base of the bobbin but, unless a space is engaged between theV ends of the ring, the bobbin is not held from turning and the device becomes merely a bobbin guide, while if some arrangement is used for engaging the ends of the ring then smashes are likely to occur because this holding means does not leaveY the bobbin free to be transferred and when transferred the bobbin will cock to one side or the other or upwardly which will result in a smash.

One of the objects of this invention is to provide an arrangement whereby the bobbins may be engaged along the filling which is wound thereon-but adjacent the base where uniformity of diameter is most frequent regardless of the amount of filling which is on the bobbin.

Another object of this invention is to support the bobbinl holderdirectly on the transfer arm and yet arrange the holder so that it Will be out of the Way of the transfer arm when the same descends to effect a transfer of the bobbin.

- Another object of the invention is to utilize a short pin on the hopper stand for the support of the b obbin engaging member while arranging this support so that it will be clear of the transfer arm-when the same descends. yAnother object of this invention is to utiliz a small amount of space on either side of the transfer arm for mounting the bobbin supporting member' so that the bobbin arm may engage a point at the base of the bobbin where the taper of the filling yarn occurs. y

Another object of this invention is to utilize a bobbin engaging member of thin structure so thatthe space which it engages and the portion of the bobbin which it engages will be relatively shortV in the direction of the axis of the bobbin.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described and particularly pointed out inA the appended claims.

In the accompanying drawing:

Fig. l is a transverse sectional view through the battery andlay showing the invention asY applied in working position Fig. 2 is a View similar to Fig 1l of a smaller fragment and illustrating the descended position of the holder member, while the transfer arm is moving `the bobbin into the shuttle;

Fig. 3v is a sectional view looking down on top of the transfer arm, the holder member and a bobbin in the battery;

Fig. 4 is a perspective View of the holding member which engages the bobbin. In carrying out this invention in order to reach the point on the bobbin which I desire to contact I employ a thin member which is supported on the downwardly extending portion of the transfer arm and which is offset so as to cross the transfer hammer arm and project beneath and in a plane Vat the opposite side of the transfer arm to a point where it will-engage the base of the bobbin and also the yarn which is in tapered form at the base. In order to support this member I project a short pin from the stationary hopper into a slot in the member, the pin being at a location so that when thevtransfer arm descends it will clear thev pin. B5 this arrangement the holding member extends at an upward angle from its connection to the transfer arm and is lifted into engagement with the lowermost bobbin in the hopper. When the transfer arm descends the member is withdrawn. 'I'his arrangement provides a very simple construction consisting of a member with aslot in it and a pin to extend into the slot to support the member.

With reference tothe drawing, Hl designates generally a conventional hopper standA for a battery loom which has rotatably mounted therein plates one of which is designated VIl and the other of which is not shown, which'support in suitable notches or formations a plurality of bobbins IllV so that these bobbins may `be advanced by suitable mechanism I3 into a position sothat the lowermost bobbin designated I4 may be transferred into a shuttle designated generally I5 and shown as located in a lay |16 which reciprocates back and forth. The transfer mechav nism is designated generally Hand is of conventional form. comprising a bell crank leverV t8k having a hammer arm I9and a depending arm 2U.

The depending arm 2D carries a dog 2| which upon exhaustion of the yarn` in the shuttle bobbin is rotated so as to be engaged by the bunter 22 carried by the lay I6 which causes a rotation of the transfer I'I causing the hammer arm I9 to descend and strike the bobbin I 4 in its lowermost position and drive it into the shuttle and expelling the exhausted bobbin I4l from the bobbin.

The holding member which I provide is designated generally 25 and is shown in perspective alone in Fig. 4. It consists of a thin piece of sheet stock having a main portion 26 slotted as at 2l, an offset 28, providing a portion 29 having an opening 30 therein at one end while a tip 3| of resilient material such as rubber is secured by the rivet 32 at the other end.

The opening 30 of this member is mounted on a pin 33 at the lower end of the downward extending transfer arm 20 so as to be pivotally supported by this arm in position thereon. The pin which may be utilized may be the pin which supports the dog 2l, but this member will be loosely supported on this pin for free rotation thereabouts. The other support for this member consists of a pin 34 which projects from the hopper stand to extend through the slot 21 in the member while the member is held in position thereon by a cotter pin 35. The pin 34 is sufficiently below the hammer arm I9 so that when the hammer arm has descended as shown in Fig. 2 it will not contact the pin. The portion of the member 29 is mounted on the depending arm 2i) on the side away from the hopper stand while the offset 28 extends beneath the hammer arm 'I9 so as to position the portion 26 of this holding member on the opposite side of the hammer arm I9. At the bobbin engaging end of the member, this arrangement so positions the tip 3| that it engages the base 35 of the bobbin I4 and also the reduced tapered portion 36 of the yarn which is on this bobbin.

The raised position of the transfer as shown in Fig.' 1 raises the holding member 25 upwardly at an angle so as to engage the bobbin from below and with suicient force so that the friction of the rubber tip on the yarn and on the bobbin base will effectively prevent rotation of the bobbin thereby stabilizing thei lowermost bobbin which has a tendency to rotate due to vibration of the loom and break the yarn which extends from the bobbin to theiholding device to provide a portion which is utilized for threading up the shuttle. ,Y K

As the transfer descends,gthe downwardly extending arm 20 is moved from the position shown in Fig. 1 to the position shown in Fig. 2, thus withdrawing the holding member 25 from its engagement with the bobbin I4 at the time of transfer and permitting the bobbin to be freely transferred by the hammer into the shuttle as shown in Fig. 2.

By the above arrangement it will be apparent that I have engaged the bobbin at its base and the yarn adjacent the base `which is a location difficult to reach in the crowded condition of the mechanism in a loom of this character. The arrangement has been provided by use of a very thin arm and offseting this arm so as to make use of very limited available space. Also the arrangement of the member is such that the hammer arm in its descent will clear the forward part of the holding member while other parts of the transfer do not descend to a point so as to engage the holding member. By having the holding member attached to the transfer it is withdrawn at the time of transfer to permit free movement of the hammer arm and transfer mechanism in its usual and customary operation while also furnishing the motive means for movement of the holding member to and from its desired position.

I claim:

1. In a loom having a hopper stand and a rotary hopper mounted therein for holding a plurality of filling carriers, a lay for confining a shuttle, and a transfer mechanism including a transfer arm for transferring the lowermost filling carrier from the hopper to the shuttle upon exhaustion of the lling on the carrier in the shuttle, said transfer arm having a downwardly projecting arm integral therewith and being disposed at approximately right angles thereto, a member pivoted at the side of said downwardly projecting arm distant from the hopper stand and Offset to extend beneath said arm and be located on the side of said arm nearest the hopper stand, said member on the side nearest the hopper stand being slotted and a pin supported on said hopper stand extending into the slot in said member to support it in the movement thereof responsive to the movement of said transfer.

2. In a loom having a hopper stand and a rotary hopper mounted therein for holding a. plurality of filling carriers, a lay for confining a shuttle, and a transfer mechanism including a transfer arm for transferring the lowermost filling carrier from the hopper to the shuttle upon exhaustion of the filling on the carrier in the shuttle, said transfer arm having a downwardly projecting arm integral therewith and being disposed at approximately right angles thereto, a member pivoted at the side of said downwardly projecting arm distant from the hopper stand and offset to extend beneath said arm and be located on the side of said arm nearest the hopper stand to extend into engagement with the lowermost bobbin adjacent its base, said member on the side nearest the hopper stand being slotted and a pin supported on said hopperstand extending into the slot in said member to support it in the movement thereof responsive to the movement of said transfer.

3. In a loom having av hopper stand and a rotary hopper mounted therein for holding a plurality of lling carriers, a lay for confining a shuttle, and a transfer mechanism including a transfer arm for transferring the lowermost lilling carrier from the hopper to the shuttle upon exhaustion of the filling on the carrier inthe shuttle, said transfer arm having a downwardly projecting arm integral therewith and being disposed at approximately right anglestheretda member pivoted at the side of said downwardly projecting arm distant from the hopper stand and offset to extend beneath said armrto be located on the side of said arm nearest thev hopper stand to extend into engagement with the base of the bobbinA and the yarn adjacent its base, said member on the side nearest the hopper stand being slotted and a pin supportedrxon said hopper stand extending into the slot in said member to support it in the movement thereof responsive to the movement of said transfer. f

4. In a loom havingV a hopperstand and0 a rotary hopper mounted therein for holding a plurality of filling carriers, a lay for confining a'shuttle, and a transfer mechanism including a transfer arm forl'transferringrthe lowermost filling carrier from the hopper to the shuttle upon exhaustion of the lling on the carrier in the shuttle, said transfer arm having a downwardly projecting arm integral therewith and being disposed at approximately right angles thereto, a member pivoted at the side of said downwardly projecting arm distant from the hopper stand and offset to extend beneath said arm and be located on the side of said arm nearest the hopper stand to extend into engage- 10 

